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Related Concept Videos

Drug Elimination: The Concept of Clearance01:06

Drug Elimination: The Concept of Clearance

3.5K
Drug elimination refers to removing drugs from the body, either through urine by the kidneys or through bile by the liver. Drug clearance is a pharmacokinetic parameter that measures the efficiency of drug removal from the bloodstream within a specific time frame. It is calculated as the rate at which a drug is eliminated from plasma divided by the plasma concentration of the drug.
Drug clearance is not limited to renal excretion but encompasses all organs involved in drug elimination,...
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Elimination Reactions02:25

Elimination Reactions

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A nucleophile can react with an alkyl halide to give the substitution product by displacing the halogen. Or it can function as a base to give the elimination product by deprotonation of the neighboring carbon to form an alkene. In an elimination reaction, the substrate loses two groups from adjacent carbons forming at least one π bond. The carbon attached to the halogen is called the α carbon, while the adjacent carbon is called the β carbon; hence, these reactions are called...
16.2K
Kinetics of Drug Elimination01:17

Kinetics of Drug Elimination

4.0K
Eliminating drugs from the body is a vital process that occurs through excretion or metabolism. Understanding the kinetics of drug elimination is crucial for drug development, dosage determination, and optimizing patient outcomes.
Drug clearance depends on the rate of drug elimination and its plasma concentration. Another important parameter is the half-life of a drug, which is the time required for its concentration to decrease by half. In most cases, drug clearance follows first-order...
4.0K
Elimination Kinetics: First-Order and Zero-Order01:05

Elimination Kinetics: First-Order and Zero-Order

2.3K
Eliminating drugs from the body is a vital process that occurs through excretion or metabolism. Understanding the kinetics of drug elimination is crucial for drug development, dosage determination, and optimizing patient outcomes.
Drug clearance depends on the rate of drug elimination and its plasma concentration. Another important parameter is a drug's half-life, which is the time required for its concentration to decrease by half. In most cases, drug clearance follows first-order...
2.3K
Parameters Affecting Nonlinear Elimination: Zero-Order Input, First-Order Absorption and Two-Compartment Model01:13

Parameters Affecting Nonlinear Elimination: Zero-Order Input, First-Order Absorption and Two-Compartment Model

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Drugs administered through various routes can lead to nonlinear elimination, resulting in complex pharmacokinetic behaviors crucial to understanding efficacious drug dosing.
When a drug is administered through a constant intravenous infusion and eliminated via nonlinear pharmacokinetics, it follows zero-order input. For example, oral drugs undergo first-order absorption upon administration and are eliminated through nonlinear pharmacokinetics.
In the case of subcutaneously administered drugs,...
207
Radical Formation: Elimination00:51

Radical Formation: Elimination

2.1K
Another method of radical formation is the elimination process. It is the opposite of the addition route and is driven by the instability of the radical. For example, as depicted in Figure 1, dibenzoyl peroxide yields a pair of unstable radicals upon homolysis. Given its instability, this radical spontaneously undergoes elimination via a C–C bond cleavage to form a relatively more stable phenyl radical. The mechanism involves cleavage of the bond between the α and β positions with respect...
2.1K

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A Treatment Package without Escape Extinction to Address Food Selectivity
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Why we went for full elimination.

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    Area of Science:

    • Public Health
    • Epidemiology
    • Health Policy

    Background:

    • Early detection and rapid response are crucial for managing infectious disease outbreaks.
    • New Zealand implemented a comprehensive strategy to control the spread of coronavirus disease 2019 (COVID-19).

    Purpose of the Study:

    • To understand the motivations and strategic thinking behind New Zealand's successful COVID-19 response.

    Main Methods:

    • Qualitative insights from a key public health official.
    • Analysis of the strategic decisions made during the initial phase of the pandemic.

    Main Results:

    • The strategy was inspired by a desire to protect vulnerable populations and prevent healthcare system collapse.
    • Key elements included strong border controls, widespread testing, and clear public communication.

    Conclusions:

    • A proactive and comprehensive approach, informed by past pandemic experiences, can lead to effective disease control.
    • Leadership vision and public trust are vital components of a successful public health strategy.